/*
 * Open Source Physics software is free software as described near the bottom of this code file.
 *
 * For additional information and documentation on Open Source Physics please see:
 * <http://www.opensourcephysics.org/>
 */

package org.opensourcephysics.tools;

import java.util.*;
import java.beans.*;

import javax.swing.event.*;
import org.opensourcephysics.tools.ToolsRes;

/**
 * String resources for launcher classes.
 */
public class LaunchRes {

   // static fields
   static Locale locale = Locale.getDefault();
   static ResourceBundle res = ResourceBundle.getBundle("org.opensourcephysics.resources.tools.launcher", locale); //$NON-NLS-1$
   static PropertyChangeSupport support = new SwingPropertyChangeSupport(new LaunchRes());

   /**
    * Private constructor to prevent instantiation.
    */
   private LaunchRes() {/* empty block */}

   /**
    * Gets the localized value of a string. If no localized value is found, the
    * key is returned surrounded by exclamation points.
    *
    * @param key the string to localize
    * @return the localized string
    */
   static String getString(String key) {
      try {
         return res.getString(key);
      } catch(MissingResourceException ex) {
         return "!"+key+"!"; //$NON-NLS-1$ //$NON-NLS-2$
      }
   }

   /**
    * Sets the locale.
    *
    * @param loc the locale
    */
   public static void setLocale(Locale loc) {
      if(locale==loc) {
         return;
      }
      Locale prev = locale;
      locale = loc;
      // get the new resource bundle
      res = ResourceBundle.getBundle("org.opensourcephysics.resources.tools.launcher", locale); //$NON-NLS-1$
      support.firePropertyChange("locale", prev, locale); //$NON-NLS-1$
      ToolsRes.setLocale(loc);
   }

   /**
    * Adds a PropertyChangeListener.
    *
    * @param property the name of the property (only "locale" accepted)
    * @param listener the object requesting property change notification
    */
   public static void addPropertyChangeListener(String property, PropertyChangeListener listener) {
      if(property.equals("locale")) { //$NON-NLS-1$
         support.addPropertyChangeListener(property, listener);
      }
   }

   /**
    * Removes a PropertyChangeListener.
    *
    * @param property the name of the property (only "locale" accepted)
    * @param listener the listener requesting removal
    */
   public static void removePropertyChangeListener(String property, PropertyChangeListener listener) {
      support.removePropertyChangeListener(property, listener);
   }
}
/*
 * Open Source Physics software is free software; you can redistribute
 * it and/or modify it under the terms of the GNU General Public License (GPL) as
 * published by the Free Software Foundation; either version 2 of the License,
 * or(at your option) any later version.
 *
 * Code that uses any portion of the code in the org.opensourcephysics package
 * or any subpackage (subdirectory) of this package must must also be be released
 * under the GNU GPL license.
 *
 * This software is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston MA 02111-1307 USA
 * or view the license online at http://www.gnu.org/copyleft/gpl.html
 *
 * Copyright (c) 2007  The Open Source Physics project
 *                     http://www.opensourcephysics.org
 */
